Count values in one column based on values in another column using DAX

[TiagoTED]

Hi everyone!
I need to generate a new column in my report using DAX. This new column should contain the sum of occurrences of a value in Column A based on the values in Column B.

Can someone help me?

Table example.

Column A          Column B (only unique values)
------------------------------------
Car                     Jet
Jet                      Car
Bus                     Bus
Bus                     Bike
Car                     Plane
Car                     Boat

I would like the output to be:
Column A        Column B         Column C
----------------------------------------------------------
Car                  Jet                         1
Jet                   Car                        3
Bus                  Bus                        2
Bus                  Bike                       0
Car                  Plane                     0
Car                  Boat                      0

Here is an example in python of what I need to do in DAX.

List = []

for value in df['Column B']:

      List.append (df[Column A].str.count(value).sum())

df['nova coluna'] = List

 PS. I can't use python script in power bi.

[VahidDM · Accepted solution]

Hi @TiagoTED 

Try this code to add a new column:

Column C =
VAR _B =
    FIRSTNONBLANK ( 'Table'[Column B], "" )
VAR _C =
    CALCULATE (
        COUNTROWS ( 'Table' ),
        FILTER ( ALL ( 'Table' ), 'Table'[Column A] = _B )
    )
RETURN
    IF ( ISBLANK ( _C ), 0, _C )

Output:

If this post helps, please consider accepting it as the solution to help the other members find it more quickly.

Appreciate your Kudos✌️!!

[TiagoTED]

Thanks so much for the help, the code worked perfectly!
I hope this answer can help others!